George c



(No Model.)

G. 0,11. POSTER INGANDESGENT LAMP SOCKET.

Patented Jan. 3. 1893.

B 0 T N E V N G. C(IiTJiGsZEzr ATTOR N EY WITNESSES:

UNITED STATES PATENT OFFICE.

scones c. n. FOSTER, or BRIDGEPORT, connnc'rrcu'r, Assienoa'ro THE CROWN ELECTRIC MANUFACTURING COMPANY, OF SAME PLACE.

lNCA'NDESCENT-LAM P SOCKET.

SPECIFICATION forming art of Letters Patent No. 489,158, dated January 3, 1893..

Application filed February 8. 1892. Renewed December 5, 1892, Serial No. 464.142. (No model.)

To all whom it may concern.-

Be it known that I. GEORGE C. II. Fosrnn, a citizen of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Sockets for' incandescent Lights; andI do hereby declare the following to be a full, clear, and exact description of the inventiomsuch as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain new and useful improvements in sockets for incandescent lights, but more particularly refers to the controller block and the spring co-operating therewith whereby the switch cam is caused to properly perform its functions.

In the accompanying drawings Figure 1, is an elevation of a socket equipped with my improvement-Fig.- 2, a section at the line as, w, of Fig. 1, and Fig. 3, a detail perspective of the cam and block.

Similar letters denote like parts in the several figures.

The present invention has nothing whatever to do with any part of the socket save the switch cam and controller block, and I will therefore not enter into any description of the other parts of the socket, but will merely say that the upper and lower contact springs a, b, with which the cam engages are arranged and constructed as in any ordinary socket.

c is the cam and d the controller block preferably formed. integral from sheet metal, as shown at Fig. 3. The cam and block are socured on the usual stem e, and a spring f secured to the insulating disk It acts against.

said block. There is nothing peculiar and novelin the cam itself, but ,in the construction of the block itwill be observed that the sides instead of being'flat are generally concaved as shown at i, so that said block really comprises a central bodyhaving four equidistant wings j extending radially and circumferentially therefrom. The spring f hasa knuckle k which co-operates'with the block after the manner of apawl and ratchet. It will of course be readily seen that when, by the turning of the block, one of the wings j has passed beyond the knuckle 7a in the spring, said in the concavity 'i thereby efiiciently brin ing and locking the block in proper position.

In order to make myself clearly understood, it might'be proper to say, that, in devices of this description, there is a decidedbbjectionthe angular contact point of the latter can be lowered for a full eighth of an inch below a horizontal plane before the spring. will recover itself, thereby contributing toward in1-; perfectcontact between the cam and upper and lower springs 01., b, and causing the formation of arcs. This, in fact, happensvery.

frequently, since the stem can be turned far enough to accomplish, to all appearances, the result aimed at,and still cause im'perfectcon, tact and formation of arcs, I claim:

1. In a socket and-bent up into form consistingof a central body having four equidistant-wings extendkn uckle will immediately spring inward withfor incandescent lights,.. the controller block stamped out of sheet metal.

ingradially therefrom in-combination with a resilient knuckle adapted to co-operate with said wingsto locktheblock in position, sub? stantially as set forth. s

' 2. In a socket for incandescent lights,-,a 0011'.

trailer block stamped out of sheet metaland consisting of a central circular portion,havingfour equidistant wings extending radially and circumterentialiy therefrom in co nbina tion with a resilient knuckle adaptedtocooperate with said wings to lock theblock in,

position, substantially-as set forth. I

3; In an incandescent lamp socket scam for switching the currentand a controller r block integral therewith all of one piece of sheet metal stamped out and bent-upinto form, said controller block consistingof a central circular portion having'fonr equidia taut wings extending radially and circifluferentially therefrom,snbstantially as set Earth.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE C. H. FOSTER.

Witnesses:

F. W. Smrn, Jr., J S. FINoH. 

